Psocess of reproducing articles in metal



A. FODOR.

PROCESS OF REPRODUCING ARTICLES IN METAL.

APPLICATION FILED APR. 17. l9l7.

1 296,4:98} Patented Man, 4, 1919.

ANTAL FODOR, OF NEW YORK, N. Y., ASSIGNOR T0 DYMALKON METALSCORPORATION, OF NEW YORK, Y., A CORPORATION OF NEW YORK.

PROCESS OF REPRODUCING ARTICLES IN METAL.

Specification of Letters Patent.

Patented Mar. 4, 1919.

Application filed April 17, 1917 Serial No. 162.797.

To all whom it may concern:

Be it known that I, ANTAL FoDoR, a subject of the Emperor ofAustria-Hungary, residing at New York, in the county of New York andState of New York, have invented certain new and useful Improvements inProcesses for Reproducing Articles in Metal, of which the following is aspecification.

This invention relates to a new process for reproducing articles inmetal such as statues, busts, signs and figures of all kinds.

An object of this invention is the production of artistic figures ofmetal in an economical fashion and which will be faithful to theoriginal reproduced.

Another ob ect of my invention is to substitute for the present costlyprocess of casting in metals a process which will be time and laborsaving and which will permit the sale of such reproductions nearly atthe price of ordinary plaster cast figures.

The essential features of our process are the making of a negative moldfrom an original in one or more parts, the reproduction of a positivecopy in a thin sheet from said negative mold in one or more parts, andthe subsequent treatment of the positive copy so produced as will behereinafter more fully described.

In the drawings, Figure 1 is a sectional view in two parts of a mold ofa head which is a negative matrix of the head to be reproduced.

Fig. 2 is a sectional view similar to Fig. 1 but showing the two partsjoined,

Fig. 3 is asectional view showing the same head with the negative matrixremoved and the same electroplated on its exterior surface, and

Fig. 4 is a sectional view of the head with a portion of the materialthereon removed and electroplated on its interior surface.

1 and 2 indicates a negative mold made in two parts. On the innersurface of parts 1 and 2 a layer of thin metal is deposited preferablyby means of spraying and for convenience in making this initial positivelayer. we use a comparatively low fusible composition made of lead, tinand antimony. Into the parts 3 and 4 respectively, an insulatingmaterial such as asphalt or parafiin is now poured as shown at 5 and 6in the drawing. The arts 1 and 2 are then joined and to cement t e samemore firmly together ings. We have found it convenient in prac-' tice topolish off the seam 8 where the parts 3 and 4 are joined and afterwardto furnish this seam with an electrically conductive surface as ofgraphite, before electroplating. By electroplating the entire piece, ahomogeneous surface is obtained on same which can be very thin so as notto distort the details of the object to be reproduced inasmuch as thepositive layers 3 and 4 are already of metal. After the plating iscompleted, the object may be put in hot water to melt and remove theinsulating material 5, 6 and 7 which flows out through the hole 9.

In order to increase the weight or solidity of the figure, it can againbe filled through the hole 9 with a metallic or nonmetallic compositionshown at 11 in- Fig. 4.

By the above process we are enabled to reproduce metallic ornon-metallic articles cheaply and with great fidelity to the originalsand in a durable non-breakable form.

What I claim is:

1. A method of making metallic repro-.

ductions by preparing positive metal copies from negative matrices inseveral pafts and joining said parts by a material of low fusibility.

2. A method of making metallic reproductions by preparing positive metalcopies from negative matrices in several parts and joining said parts bya material of low fusibility and afterward electroplating said parts.

3. A process of making metallic reproductions by producing positivecopies from negative matrices, joining said copies by material of lowfusibility, electroplating said copies and afterward reinforcing saidelectroplated object.

4. A method of making metallic reproductions by preparing a negativematrix in several parts, preparing positive copies therefrom, joiningsaid positive copies and electroplating said positive copies so as toproduce a single piece.

5. A method of making metallic reproductions by making a negativematrix, producing a positive copy in a thin metallic sheet upon saidmatrix by spraying, reinforcing said positive cop With an insulatingmaterial of low fusibility, electroplating said positive copy andremoving said insulating material.

6. A method of making metallic repro- Oopies 0! this patent may beobtained for ductions by making a negative matrix, producing a positivecopy in a thin metallic sheet upon said matrix by spraying, reinforcingsaid positive copy with an insulating material of lowfusibility,'electrop1ating said positive copy, removing said insulatingmaterial and reinforcing'said positive copy after said insulatingmaterial has been removed.

In testimony whereof I hereunto afiix my signature. 1

' ANTAL FODOR.

five cents each, by addressing the "Commissioner of Patents, Washington,D. 0."

